Channel Support Systems - Channels & Channel Nuts

Overview

Channel and brackets are manufactured to BS 6946–specifications for metal channel cable support systems for electrical installations and calculations for loading are in accordance with BS 5950 Part 5 structural use of steelwork in buildings, code of practice for cold formed thin gauge sections.

Single Channel

The standard finish for channel is pre-galvanised mild steel to BS EN 10326, other finishes can be offered upon request: hot dip galvanized (G) after manufacture to BS EN ISO 1461; stainless steel (S) to BS EN 10088 2 grade 1.4404 (equivalent to 316L31).

Standard channel

Standard channels are cold rolled to BS 6946 from 2.5 mm pre-galvanised mild steel to BS EN 10326 grade S250GD Z275.

Wide×Depth Length Weight
mm×mm mm kg/m
41×21 3 1.8
41×21 6 1.8
41×41 3 2.6
41×41 6 2.6

Light gauge channel

Light gauge channels are cold rolled from 1.5 mm pre-galvanised mild steel to BS EN 10326 grade S250GD Z275, not available in stainless steel (S) finish. Ribbed strut designed to fit channel nuts.

Wide×Depth Length Weight
mm×mm mm kg/m
41×21 3 1.2
41×41 3 1.7

Back-To-Back Channel

Back-to-back channels are formed by spot welding together two finished single channels at 150 mm centres under controlled conditions to BS 5950 : Part 5 1987. All welds and spot welds are suitably protected.

Wide×Depth Length Weight
mm×mm mm kg/m
41×41 3 3.6
41×83 3 5.2
41×83 6 5.2

Slotted Channel

Standard channel

Slot pattern may differ on stainless steel channels
Wide×Depth Length Weight
mm×mm mm kg/m
41×41 3 3.6
41×83 3 5.2
41×83 6 5.2

Light gauge channel

Slot pattern may differ on stainless steel channels

Wide×Depth Length Weight
mm×mm mm kg/m
41×21 3 1.0
41×41 3 1.5
41×41 6 1.5

Channel Nuts

For use with all channels, M12 channel nuts should always be used for maximum load conditions. The standard finish for all nuts is zinc plated to BS 3382: Part 2, stainless steel (S) and hot dip galvanized (G) finish can be offered upon request. Fastenings: use hexagon head setscrews.

Long springs

For use with 41 mm deep channel

  • Size Thickness
      mm
    M6 6
    M8 8
    M10 10
    M12 12

Short springs

For use with 21 mm deep channel

  • Size Thickness
      mm
    M6 6
    M8 8
    M10 10
    M12 12

No springs

For use on all channel depths

  • Size Thickness
      mm
    M6 6
    M8 8
    M10 10
    M12 12